CN202358890U - Force limiting device - Google Patents
Force limiting device Download PDFInfo
- Publication number
- CN202358890U CN202358890U CN2011205474519U CN201120547451U CN202358890U CN 202358890 U CN202358890 U CN 202358890U CN 2011205474519 U CN2011205474519 U CN 2011205474519U CN 201120547451 U CN201120547451 U CN 201120547451U CN 202358890 U CN202358890 U CN 202358890U
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- China
- Prior art keywords
- force
- force limiting
- ball
- bases
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a force limiting device. The force limiting bases of the force limiting device are provided with a plurality of through holes; the through holes are internally provided with force limiting springs; ball bases are internally provided with thrust bearings and radial ball bearings; the cross section of each ball base is provided with a plurality of concave holes which correspond to the through holes; force limiting balls are connected with the force limiting springs and arranged in both the through holes and the concave holes; one ends of the force limiting base are connected with the ball bases through the force limiting balls, and the other ends are provided with spring bases; the spring bases are provided with slots which correspond to the through holes; the force limiting springs are arranged in the slots; and the thrust bearings are connected with the force limiting bases. Because the spring bases are integrated together, the force limiting springs and the force limiting balls can be stressed uniformly, and the force limiting precision can be improved. In addition, because the thrust bearings are used for bearing the axial force generated by the force limiting bases, the damage to the radial ball bearings can be avoided, and the service life of the force limiting device can be prolonged hereby.
Description
Technical field
The utility model relates to a kind of force-limiting device.
Background technology
In the patent No. is a kind of force limiting device of ZL201020502986.X, has several perforation on its force limiter, and is provided with force-limit spring and push rod in the perforation, and push rod and force-limit spring join; Be provided with radial ball bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join, and limit power ball is arranged in perforation and shrinkage pool simultaneously, and force limiter is engaged togather through limit power ball with ball seat mutually.The force limiting device of this structure because of each force-limit spring joins with different push rods, can make each spring stress uneven, causes limitting the power ball stressed inconsistent, has influenced the limit power accuracy rate and the service life of force limiting device.
Summary of the invention
The purpose of the utility model provides a kind of force-limiting device that can improve limit power accuracy rate and service life.
The technical scheme that the utility model is taked is: a kind of force-limiting device has several perforation, and is provided with force-limit spring in the perforation on the force limiter; Be provided with bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join; Limit power ball is arranged in perforation and shrinkage pool simultaneously; One end of force limiter is engaged togather through limit power ball with ball seat mutually; It is characterized in that on the other end of force limiter, being provided with spring perch, have on the spring perch and the corresponding slotted eye of perforation, and force-limit spring is arranged in slotted eye.
Described bearing is divided into thrust baring, radial ball bearing, and thrust baring is connected with force limiter mutually.
Adopt the utility model,, can make force-limit spring stressed evenly, make limit power ball stressed evenly, improve limit power accuracy rate because of spring perch is an integral body; In addition,, prevent that radial ball bearing is impaired, thereby prolong the service life of force-limiting device because of bear the axial force that force limiter produces through thrust baring.
Description of drawings
Fig. 1 is the utility model scheme drawing.
Sequence number is represented among the figure: spring perch 1, slotted eye 2, force-limit spring 3, perforation 4, force limiter 5, limit power ball 6, ball seat 7, thrust baring 8, radial ball bearing 9 and shrinkage pool 10.
The specific embodiment
Embodiment below in conjunction with concrete is described further the utility model.
With reference to Fig. 1, have several perforation 4 on the force limiter 5 of this force-limiting device, several perforation 4 are regular symmetric shape, are provided with force-limit spring 3 in the perforation 4, and the part of force-limit spring 3 is arranged in perforation 4; Be provided with thrust baring 8 and radial ball bearing 9 in the ball seat 7, thrust baring 8 is positioned at the front end of radial ball bearing 9 and is connected with force limiter 5, the cross section of ball seat 74 corresponding several shrinkage pools 10 that are provided with and bore a hole, and shrinkage pool 10 is regular symmetric shape; Limit power ball 6 joins with force-limit spring 3, and limit power ball 6 is arranged in perforation 4 and shrinkage pool 10 simultaneously, and an end of force limiter 5 is engaged togather through limit power ball 6 with ball seat 7 mutually.On the other end of force limiter 5, be provided with spring perch 1, have on the spring perch 1 and perforation 4 corresponding slotted eyes 2, and force-limit spring 3 another part also be arranged in slotted eye 2.
During use, unclamp through spring perch 1 as required earlier or press force-limit spring 3 and regulate limit power size, afterwards; Start mechanical equipment; When mechanical drive to force limiter 5, if ball seat 7 is stressed excessive, limit power ball 6 can skid between perforation 4 and shrinkage pool 10; Ball seat 7 can stop operating, and can realize the purpose to mechanical drive limit power.Because of spring perch 1 is an integral body, can make force-limit spring 3 stressed even, make limit power ball 6 stressed even simultaneously, improve limit power accuracy rate; In addition,, guarantee the gap between force limiter 5 and ball seat 7 end faces, prevent that radial ball bearing 9 is impaired, thereby prolong the service life of force-limiting device because of bear the axial force that external force produces through thrust baring 8.
Claims (2)
1. a force-limiting device has several perforation on the force limiter, and is provided with force-limit spring in the perforation; Be provided with bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join; Limit power ball is arranged in perforation and shrinkage pool simultaneously; One end of force limiter is engaged togather through limit power ball with ball seat mutually; It is characterized in that on the other end of force limiter, being provided with spring perch, have on the spring perch and the corresponding slotted eye of perforation, and force-limit spring is arranged in slotted eye.
2. a kind of force-limiting device according to claim 1 it is characterized in that bearing is divided into thrust baring and radial ball bearing, and thrust baring is connected mutually with force limiter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205474519U CN202358890U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205474519U CN202358890U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202358890U true CN202358890U (en) | 2012-08-01 |
Family
ID=46570094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205474519U Expired - Fee Related CN202358890U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202358890U (en) |
-
2011
- 2011-12-09 CN CN2011205474519U patent/CN202358890U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151209 |
|
| EXPY | Termination of patent right or utility model |